I'm not sure if I'm posting this in the write place or not...so sorry if it is not.

I started making bottle cap necklaces and was wondering if we are legally able to print and sell HK, Twilight, MLP, NBA, MLB, Spongebob, etc without getting into some sort of trouble? I know a lot of people sell those images on etsy and stuff, but just want to make sure I won't get in trouble.